Why do I have a blue tint in the whites of my eyes?

The white of the eye, called sclera, is normally between 0. 3mm to 1mm thick. If it is thinner, for example in children, the underlying layer called choroid, which has a blue tint, can shine through, making the white sclera appear to be slightly blue as well.

The blue tint in the sclera *whites of the eyes" is pretty normal. Now if you see tiny blue lines this could be a problem, it could be a sign of cyanosis or low blood oxygen. The only other thing that causes blue tint is a the side effects of certain medications.

If the tint is only a slightly icy blue, nothing is wrong. As a matter of fact,
it appear blue in contrast to a brown or hazel iris. Perhaps a vein
is close to the surface. The real concern would be to notice any yellowing of that area.